AMIS30624C6244RG

I C Micro-stepping Motor Driver 1.0 General Description The AMIS-30624 is a single-chip micro-stepping motor driver with a position controller and control/diagnostic interface. It is ready to 2 build intelligent peripheral systems where up to 32 drivers can be connected to one I C master. This significantly reduces system complexity. The chip receives positioning instructions through the bus and subsequently drives the stator coils so the two-phase stepper motor moves to the desired position. The on-chip position controller is configurable (OTP or RAM) for different motor types, positioning ranges and parameters for speed, acceleration and deceleration. Micro-stepping allows silent motor operation and increased positioning resolution. The advanced motion qualification mode enables verification of the complete mechanical system in function of the selected 2 2 motion parameters. The AMIS-30624 can easily be connected to an I C bus where the I C master can fetch specific status information like actual position, error flags, etc. from each individual slave node. An integrated sensorless stall detection stops the motor when running into stall. This enables silent, yet accurate position calibrations during a referencing run and allows semi-closed loop operation when approaching the mechanical end-stops. The chip is implemented in I2T100 technology, enabling both high voltage analog circuitry and digital functionality on the same chip. The AMIS-30624 is fully compatible with the automotive voltage requirements. 2 AMIS-30624 2.0 Product Features Motor Driver • Micro-stepping technology • Sensorless stall detection • Peak current up to 800mA • Fixed frequency PWM current-control • Selectable PWM frequency • Automatic selection of fast and slow decay mode • No external fly-back diodes required • 14V/24V compliant • Motion qualification mode Controller with RAM and OTP memory • Position controller • Configurable speeds and acceleration • Input to connect optional motion switch I2C interface • Bi-directional 2-wire bus for Inter IC Control • Field programmable node addresses • Full diagnostics and status information Protection • Over-current protection • Under-voltage management • Open circuit detection • High-temp warning and management • Low-temp flag EMI compatibility • High voltage outputs with slope control • HV outputs with slope control ©2008 SCILLC. All rights reserved. June 2008 – Rev. 4 Publication Order Number: AMIS30624/D AMIS-30624 3.0 Applications The AMIS-30624 is ideally suited for small positioning applications. Target markets include: automotive (headlamp alignment, HVAC, idle control, cruise control), industrial equipment (lighting, fluid control, labeling, process control, XYZ tables, robots) and building automation (HVAC, surveillance, satellite dish, renewable energy systems). Suitable applications typically have multiple axes or require mechatronic solutions with the driver chip mounted directly on the motor. 4.0 Ordering Information Table 1: Ordering Information Part Number Package AMIS30624C6244G AMIS30624C6244RG AMIS30624C6245G AMIS30624C6245RG SOIC-20 SOIC-20 NQFP-32 (7 x 7 mm) NQFP-32 (7 x 7 mm) Temperature Range -40°C…..125°C -40°C…..125°C -40°C…..125°C -40°C…..125°C Shipping Configuration Tube/Tray Tape & Reel Tube/Tray Tape & Reel Peak Current 800mA 800mA 800mA 800mA 5.0 Quick Reference Data Table 2: Absolute Maximum Ratings Parameter Vbb Tamb Tst Vesd (3) Min. -0.3 (2) Max. +40 (1) Unit V °C °C kV Supply voltage Ambient temperature under bias Storage temperature Electrostatic discharge voltage on pins -50 -55 -2 +150 +160 +2 Notes: (1) For limited time